int redpin = 11; //select the pin for the red LED
int bluepin =10; // select the pin for the blue LED
int greenpin =9;// select the pin for the green LED
int val;
void setup() {
  pinMode(redpin, OUTPUT);
  pinMode(bluepin, OUTPUT);
  pinMode(greenpin, OUTPUT);
  Serial.begin(9600);
}
void loop()
{
for(val=255; val>0; val--)
{
  analogWrite(11, val);
  analogWrite(10, 255-val);
  analogWrite(9, 128-val);
  delay(1);
}
for(val=0; val<255; val++)
{
  analogWrite(11, val);
  analogWrite(10, 255-val);
  analogWrite(9, 128-val);
  delay(1);
}
Serial.println(val, DEC);
}
